The first thing to do is to sign up with Musement (if you haven't done that already). You need an exsiting Musement account with published/ active products in order to connect.
Whats needs to be done in Bókun ?
You start by selecting "Contracts" on the top bar, then you select "Online Travel Agencies OTA's" from the drop down list.
Select "Sell through this channel" by Musement
If you run into any trouble please contact Bokun Connectivity Support using firstname.lastname@example.org