Since there are only tow tables you wouldn't use manage relational table.
You could probably use the Insert server behavior on multiple pages, or really run DataAssist two times and link the groups of pages for full management of a two table relationship.
An example is what you see in the powerstore order information. It uses the orders and orderdetails tables and provides back-end read access and order update. You could imagine a similar implementation with edit access to the individual child records as well in that framework.
The reality is that it takes several pages to allow someone to find, insert, update records from both tables. You can do it all with just single inserts at a time, you just want to maintain a relationship but that doesn't necessarily mean even using multiple insert although you could design a user interface to do that.
Your database design is too simple to take advantage of manage relational tables, so you can ignore that. From there what you use depends on what user interface you decide you want.
