Add a selection in PIM in OrangeHRM

Clash Royale CLAN TAG#URR8PPPAdd a selection in PIM in OrangeHRM
I am new to OrangeHRM and I am not familiar with SQL but I would like some assistance with adding fields to PIM module of OrangeHRM. I saw other answers in the forum but I dont know how to start.
Any guidance or help would be appreciated.
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