Your best bet depending on the clothing you’re wearing behind the kit would be…….google……..
side draw belly band holster
Concealed carry Fanny pack holsters
Or shoulder or ankle holsters . All will have their limitations and pros and cons . Last for me on the list would be an ankle holster. Never liked them . But the comfort of those ( for playing behind a kit) depends on the size of the weapon. Same with shoulder holsters. Stop in your preferred gun store and try a few on and explain to a knowledgeable employee or owner your intended use to find an option that suits you

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This may help you out a little
How do you carry your gun comfortably while sitting down? If you are new to concealed carry, or just need ways to make concealed carry more comfortable, this Vedder Holsters article is for you.
www.vedderholsters.com