Laptop setup v SSD + HDD

Hi, I have recently purchased a laptop with 128TB  SSD (nvme) + 1TB HDD, 8th gen i7, 16GB RAM

I plan to install the following software:

Photoshop

Lightroom (main use)

Premiere pro (main use)

Cubase AI

Antivirus

MS Office

By taking into consideration of size of the SSD, i would like to ask what will be the best setup which the system will work more efficiently.

Q1: where (SSD/HDD) should I install each of the above-mentioned software.

Q2: suggestion for the stor of the following data, should it be in SSD or in HDD?

- lightroom catelog, preview file, source photo/video, windows index, etc

Q3: which drive should use as scratch drive?

Q4: are there any other setup for the new laptop to  which can improve performance?

Million thanks