Change the copyright info in the footer Joomla 3.10x

[JulesCC]

I know I need to upgrade the site but this kinda of needs to be done now. All the tutorials I see online tell me to go to Extensions> Template Manager>Styles>Assigned>Options.
But in my version it's Extensions>Templates>Styles< and when I click on the assigned template there's no "option" tab.
Is there a different way to do in Joomla 3.10? Or is it in a configuration file somewhere?
Thanks for any help.

[AMurray]

What template are you using? Please provide a link to the site.

Different templates may have different method. Some might have a module called "copyright", others in the template options may have a place specifically to place copyright information.

I don't know what you mean by assigned template, that's to do with assigning a menu item to a different template, not about showing a copyright notice.

[JulesCC]

I didn't understand "assigned template" either, it just kept showing up in my Google searches. if it's any help I'm using the last update of Protostar in Joomla 3.
Here's the site: https://livelineradio.com/

[gws]

That does not appear to be a protostar template, site says it is templates/partyliveline and it looks very basic with the copyright message hard coded in the template.

[JulesCC]

The partyliveline template is just a child template of Protostar that I renamed. If I go to: Templates: Edit Style this is what I see--

partyliveline
Site
Continuing the space theme (Solarflare from 1.0 and Milkyway from 1.5), Protostar is the Joomla 3 site template based on Bootstrap and the launch of the Joomla User Interface library (JUI).

Is the copyright info hard coded into Protostar?

[Per Yngve Berg]

It's the Footer Module that is published in the Footer Module Position. It cannot be modified.
You can replace it with a Custom HTML Module and enter your own layout.