Help for Aimeos

we are using aimeos 19 version and laravel 7 in linux OS.

Can you please suggest how easily we can add the mollie payment gateway into the system. It will be great if you show us the required steps to follow. can we just configure it from admin panel only ?

You need to install the ai-payments extension and configure a payment service option for Mollie:
https://aimeos.org/docs/2021.x/manual/services/#mollie

Please note that Laravel 7 isn't supported any more and probably contains security issues:
https://laravel.com/docs/8.x/releases#support-policy

Also, Aimeos 2019.10 is in ETLS phase:
https://aimeos.org/roadmap
It's only supported by the Aimeos GmbH if you have bought their extended long term support:
https://aimeos.com/support#c428