No Plugin Directory after install Oxide for RustNot An Issue

Dear community, I tried to install the following:

Available addons/mods
=================================
Oxide for Rust - Allows for the use of plugins - https://umod.org/games/rust
* rustoxide

Enter an addon/mod to install (or exit to abort): rustoxide

Installing Oxide for Rust
=================================
Warning! Oxide for Rust is already installed
* Any configs may be overwritten.
Continue? [Y/n] Y
creating mod download directory /home/rustserver/lgsm/mods/tmp...OK
########################################################################################################## 100.0%
extracting Oxide.Rust-linux.zip...OK
building rustoxide-files.txt...OK
copying Oxide for Rust to /home/rustserver/serverfiles...OK
tidy up rustoxide-files.txt...OK
clearing mod download directory /home/rustserver/lgsm/mods/tmp...OK
Oxide for Rust installed

I use LinuxGSM - newest version.

It seems that all is installed. But, if I want to install a plugin, there is no plugin directory.
What did I make wrong?

Thanks for Help
antman313

The plugins directory is created when the server has successfully started with Oxide installed.