IMPORTANT In order to change your password , you need to OWN the company, not "share" the company. Review that you are indeed the OWNER of the company first before changing the password

Start by opening MY ACCOUNT menu and press on "user profile"

Press on Change your password menu and fill the current password and new password fields.  Make sure you respect the requirement for your new password:

- at least 8 characters long 

- at least one uppercase letter

- at least one lowercase letter

- at least one number 

- at least one symbol (like: or or or &, etc.)

Related Articles (Please refer to the links below)

-I forgot my password/How to reset your password