Before doing anything make sure that your server is even capable of using the plugin. Generally, it is very likely that it will work without any issues. The following article explains how you're able to check the few requirements that exist for using this plugin.
As a server operator with access to the admin commands or the console type in the command
/ver. This will display a rather cryptic text, but you only have to filter out to information as seen in the following picture:
The text aligned in red represents the name of the software you use for your server. Make sure it's saying either Spigot or PaperSpigot. Others might work as well, but if you want to be on the safe side you might want to switch one of them.
Their wiki pages: Spigot, PaperSpigot
The text inside the orange rectangle displays the Minecraft version of your software. Make sure it's at least 1.8.8. If it's something between 1.8 or 1.8.7 then you must update it to at least 1.8.8. Older versions are known to be incompatible with some plugins and contain a rather large amount of bugs, so it's generally a good idea to update.
It is very likely that you're already running a supported version. But if you want to verify it you must open a terminal on the machine on which your server is running on. If it's a Windows machine click on the Windows symbol and search for
powershell (Win10+ only). Otherwise, if it's a Linux machine open your terminal. It is possible that you need a software, such as PuTTY or WinSCP, to connect to your distant machine.
If you're inside the console type
java --version to display your currently used version. If it's printing that the command is missing then your machine isn't even viable to run the Minecraft server. Otherwise, it should print something like this:
It should print either 1.8, 9, 10, or something higher. Otherwise, you'll have to update it to at least version 8.
It's very difficult to tell if the plugins you're using right now will affect the features of the plugin. As a rule of thumb, you can count the number of plugins you're running. The more you have the more likely it is that something will get interfered with. This generally can be told for any plugin. Otherwise, Marcely's Bedwars is the plugin with the highest likeliness that it will work compared to other plugins, so you shouldn't be afraid in this topic. Furthermore, the plugin will print even a warning while it is starting when it detects an incompatibility. If you want to be sure you might want to contact us.
Updating the plugin is as easy as installing it. You should follow these steps for a fluent transition from an older version to a newer one:
Generally nothing must be done with the plugin. Only make sure you're following the following table:
Doable with limitations: The plugin will try its best to update. Not everything will be updated perfectly. Keep in mind that it's not possible to go back unless you've created a backup of the MBedwars folder.
Not doable: You must delete the MBedwars folder (stop your server first!) and reconfigurate everything. Things will break if you downgrade anyways.