SAR Interferometry_PS and SBAS

Dear experts,
Could anyone tell me the procedure to run PS or SBAS in SNAP software?

we have a full sub-section about this topic: https://forum.step.esa.int/c/s1tbx/stamps

SBAS is currently not supported in SNAP. You can find good basic materials here:

Especially the reading recommendations are a good start.

Thank you so much Sir.