There are 4 ways of hiding one taxpayer in your general list of customers (main opening screen).
1. First, it is possible to hide a taxpayer from a particular user, in one or more particular modules.
This is useful, for example, in an office where user A handles a taxpayer's VAT returns and user B handles other obligations. This taxpayer can be hidden from user A in all other modules other than the VAT module. The same applies to user B, who can see the taxpayer in the module he uses, but not in the VAT module.
This "Visibility of taxpayers in modules" option is available in the "Edit" menu, and also in the contextual menu obtained by right-clicking on a taxpayer.
Then choose the visibility you wish on this taxpayer.
2. Another option hides the taxpayer from all users in all modules. If you open the taxpayer, you can hide it via the "stop activity" (Stopzetten van activiteiten) option (see screenshot below).
4. You can also "destroy" your taxpayer : he won't be appearing in the list anymore but he is not "erased". Its data remain in the DB and if you wish to "revive" your customer just create a new customer with the same VAT number and Corporate Desk will show him again with all its data attached (documents, declarations...).