You'll need to check responses / progress on your seafarers proposal via the 'Pending List'.
Go to 'maintenance > Pending List' and then select the 'employment discussions' tab.
You will see the pending employment discussions for you in the 'Pending With' column.
To view the negotiation or the whole proposal, either click on the 'View Neg.' or the 'View Prop' button next to the respective seafarer entry, as shown below: