You should now be redirected to the new Remote Node's page, with a green notification confirming the operation's success appearing at the bottom right.
To be able to allocate software on the destination Project through the Remote Node, you will need to have a proper Allocation Supply set up for it, just as if you were requesting a software instance in your own Project.
To do so, click on Add Allocation Supply in the Actions menu on the left. If needed, this tutorial explains the details of the procedure: HowTo Add an Allocation Supply on the SlapOS Panel.
Even though the document is for a Compute Node Allocation Supply, the principle remains the same and the steps can be applied identically here.