I think you need to describe your problem in more detail, what exactly do you want to change?

By and large, the templates have the same structure in the backend.
Do you know this help page :
https://www.joomla51.com/joomla-tutorials

Have you read the descriptions on this page under the point: "Template parameters" ?

yes, i read the descriptions, but i get the following error:
Preset could not be loaded: Die Datei „tpl_j51_london/helper.php“ existiert nicht.

Hi Stefan

On which version of Joomla are you having this issue?

Ciaran

Hi Ciaran, i have installed Version 4 (and i have also installed Template London 4)
thanks for help
Stefan

Thank you Stefan

Strangely we are unable to replicate this issue. May I suggest sending temporary administration access to your Joomla installation to info@joomla51.com and we will examine this issue further. For our reference please paste a link to this post in your email.

Ciaran

Hi Ciaran
maybe i found the reason: in the Template Installation i did not found the folder "presets"
so i copied this folder into "Templates/j51-london/ (with FTP)
and now it run perfect - but the question is why was the folder not in the original installation?
Thanks
Stefan

Hi Stefan

Thank you for detailing your solution. That has allowed us to replicate the issue and to create a solution. I have just updated the London template with a fix.

Ciaran