Populate table using multiple forms

[biarced]

I have this table which I am trying to populate using forms.
The first form is used to enter information for the first half of the table. The second form is used to enter the second half of the table. User enters information on form #1 and saves the information (using save button). User then clicks on a button labelled 'Form 2'. This opens Form #2 (for the current record they are entering information on). User then proceeds to enter rest of the information to populate second half of the table and saves (using another save button on form #2).
What is the basic structure of the forms I need to create to enable this very basic functionality? Does anyone have a prebuilt macro script to enable a button to launch the record in the second form to enable the user to continue working on? I am trying to circumvent Base's inability to provide tabs.

Moderator: I have removed any known cross postings. Please do not lock this post. I am up against the wall and really really need a solution.

LibreOffice Base ver 6.0.7.3
Linux Mint 19.2 Cinnamon

[robleyd]

Cross posting is fine providing you make it known that you are doing it and link to the other site(s) where you have posted. That way no one covers ground that has already been covered in another site.

[Villeroy]

You can store the current record's primary key in a separate table and link the 2 entry forms to that value.

Search this forum for "power filtering".

[Villeroy]

Added some more buttons and a list box.
[Sync] syncronizes this form after the other has been changed by refreshing the main form.
[OK] refreshes the subform after the main form changed.
[Open] opens the other form.
[Close] closes this form.
The list box in the main form shows the availlable IDs.