You can add multiple stand sharers to a contract for a stand, e.g. a company may book and pay for stand for 100m² but have eight other companies exhibiting on the stand, and you require these sharers to be recorded.
Stand Sharers can be added in the Companies tab of the Contract Screen.
If these companies are also invoice companies, i.e. will be paying toward the cost of the stand and will need to be invoiced, see Contract Companies Page for more details on splitting payments.
When building report lists such as from the BusiRep Report, if you wish to include these companies remember to tick the Non Paying Sharer box in the report window.