You need to get into the bar and let Macca in.
Look at the dumpster behind Macca. It has some weird lock on it. Open the first bin on the left. Look in the bin and find a WALLET. Open the wallet in your inventory and find no money but a DRIVERS LICENSE. Look at the license to see the owner of the wallet.
Walk to the left and try to enter the bar. No matter what you tell the bouncer, you won’t get in. Not even with the license that isn’t yours. Walk back to the right and talk to Macca. Ask him for ideas. He has one, although not really good, and gives you his LIGHTER. Use the lighter on the drivers license to make it unrecognisable and walk to the bouncer on the left. Give him the license and give him a reason why it’s so damaged. You’re in!
Walk all the way to the right and open the door to the toilets. At the right you’ll find the door Macca was talking about. Walk left and open the door to return to the bar. Look at the door to the left of the tow talking gentlemen. It says “Staff Only”.
Walk a bit to the left to where there’s a notice board with posters. Amongst them is also a FLYER. Look at it and take it. Apparently they’re looking for staff. Now how good is that? Walk to the bar on the left and talk to the bar man. Ask about the staff wanted and clearly he wasn’t informed. Give him the flyer and he’ll give you an T-SHIRT. Walk all the way to the right and open the door to the toilets. Use the male entrance side of the toilets and use the t-shirt with the open cubicle on the left.
Walk through the exit on the right and open the door on the left to return to the bar. When you want to open the staff door the man behind the bar sets you to work: collect all the empty glasses. Pick up a BEER GLASS on the right of the door. There’s an empty BEER GLASS under the red poster left of the door and another BEER GLASS a bit further to the left on the same shelf. Walk all the way to the left and at the left end of the bar is another BEER GLASS.
Walk over to the bar man and give all glasses back to him. Now you can walk to the right and open the door to the Staff Room. Meet Jasmine. After the conversation, take the KEY from behind the couch. Open the door on the left to return to the bar and open the door to the toilets.
Use the key on the store room door to unlock it and then open the door to get in. Look at the poster on the wall on the right to learn more about health and safety during cleaning. This also indicates how you can get into the female part of the toilets.
Pick up the YELLOW SIGN and the BUCKET. Take the RED MOP and open the door on the left to leave the room. When you remove the red mop you’ll reveal a SMALL KEY. Take it and open the door on the left to leave the room. Use the yellow sign in front of the female side of the toilets and then walk in.
There’s a door on the far right. It’s locked so use the small key on the door to unlock it and open the door to a small courtyard. There’s an empty drum and a wooden chest. Open the box and look at the box to find some old screws but also a pair of BOLTCUTTERS. Pick them up and open the door on the left to get back into the toilets. Walk through the exit on the left and to the door on the right. Use the bolt cutters on the chain to remove them from the door. Now you only need to disable the alarm.
Walk left and use the door on the left to leave the toilets then open the door to the staff room. Since Jasmine isn’t here, push the button behind the couch to disable the alarm. But then security comes in and you’re kicked out. Walk to the right to tell Macca everything.
Game source: A copy of the game was found here on the internet.