Need to install support moudle only

In erpnext there are mulitiple module is there i need to install only support module

Support module is located under the erpnext app. The support module does not have a separate app. If you don’t want to another module then you can remove the module from the user.

is there any way to remove unwanted app?instead of removing the users from module

which app do you want to remove? if remove the erpnext then it also removes all module.

i dont want selling account module

Also in the support module can we customize the as per our requirement?

remove the sales-related rights and also remove the module from the User doctype, I already told you in the previous post.

Yes you can, if you want changes on the server-side, then you have to create a custom app and override method. also, you have to learn the concept of the hook.

There is helpdesk app, can we install that and try? what is the different between erp support module and frappe helpdesk?

It is a built-in Support module that helps manage customer support activities such as issue tracking, service level agreements (SLAs), and etc.

It also does the basic functionality but it provides more advanced features for managing customer support. please explore this.