You will probably have to sort the entertainment for your venue.
In my opinion, you should probably already know what type of music the nightclub will offer. If the current entertainment style is no longer working or if you're starting from a blank slate, you can choose a particular style for the bar.
In some cases, you can match the look of your nightclub to the music. For example, putting cowboy hats around the place would symbolize country music. Skulls are generally used in metal bands. You may want to get an interior designer to help with this aspect.
You may want to reach out to artists if not enough of them are approaching you. It could be worthwhile to check their social media followers and how many people are commenting on their posts. If they have a strong active following, this will make it more likely that some of their fans will come and see them.
In some cases, you may have to manage the promotions for your venue, but normally this is delegated to people that create graphics and/or handle the social media advertising, etc. Typically, your promotions manager would send you marketing materials to approve, and that's the bulk of the work surrounding this. It's possible to have one company handle all this or you can deal with multiple companies depending on what's efficient.
You will be responsible for hiring and firing the staff. People skills are typically good for this.
Some of the types of employees that you would need to have are bartenders, lighting technicians, servers, and security.
Most staff, including yourself, would be best to have people skills. If they don't, people can be turned off from coming to the venue and tell their friends about their experience. Many people go clubbing in groups, so if one person had a bad experience, a bunch of people may decide to go elsewhere.
You would need to ensure your bar has enough stock for its business hours. Running out of stock is not a good look, so you may want to order a bit more than required so you never run out of an ingredient or drink.
A critical part of any business manager is ensuring that the business is complying with local and national laws. If you don't do this, your nightclub could be forced to close until it's compliant.
You would be best learning the local laws and developing policies to ensure that the venue is complying with the laws.
You will need to ensure that the nightclub is a safe environment for customers.
You should ensure that accounts and bills are paid in an acceptable amount of time and that there are no problems with the amount of money coming in.
Making sure the venue isn't constantly losing money is a good idea. Part of this can be ensuring that all outgoing drinks are being accounted for and there's no theft, etc. The venue should always keep a record of any free or discounted drinks it gives out.
* The salary benchmark is based on the target salaries of market leaders in their relevant sectors. It is intended to serve as a guide to help Premium Members assess open positions and to help in salary negotiations. The salary benchmark is not provided directly by the company, which could be significantly higher or lower.