The ability to place shifts on the market is a property of each "calltype". You can set these individually.
1. Go to "Call" from the HosPortal navigator bar.
2. Choose "admin"
3. Choose the calltype you wish to permit shift marketing
4. Choose edit
The following options pertain to the market
1. "allow market" means users can place shifts on the market, for swaps only
2. "allow gifts" means they can place shifts on the market as gifts
3. "allow bounty" means they can add a bounty to either swap or gift shifts