Personal profile/business posting help

Hi
I have a personal profile on FB and have also created a business page for my holiday rental cottage.
In order to promote myself I join many groups relating to the industry to which I can post and advertise.

However I notice that at least half of the members of these groups post as their business name whereas I only seem to be able to post with my own personal profile name.
How do I get to a stage where I can toggle between my profile posting and my business page posting?
I have tried to...

Personal profile/business posting help

from Facebook https://ift.tt/2Ybr7hd
via IFTTT