> For the complete documentation index, see [llms.txt](https://cee-systems.gitbook.io/tcp/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cee-systems.gitbook.io/tcp/overview/how-to-switch-between-pccs.md).

# How to switch between PCCs

Once the registration is complete, each TCP user is assigned with access credentials. Using these credentials, the user can log in to a PCC and proceed with the exchange process in their default PCC.

The default PCC is displayed under your profile in upper right header section. 

<figure><img src="/files/wwzRXpRCkJ5P7CwqB9mj" alt=""><figcaption></figcaption></figure>

If you want to use multiple PCCs in TCP, you need to add your extra PCCs one by one as described in the *PCC activation* section.

After your extra PCC has been successfully added, you can change your default PCC by selecting alternative an PCC in the drop-down menu:

<figure><img src="/files/9teR00Mc4oiZsDYWBaWE" alt=""><figcaption></figcaption></figure>