How to properly configure Apache in OpenServer?

Question

Apache HTTP Server

Hello. The situation is the following.
On OpenServer, one of the hosts needs to be configured as follows:

<VirtualHost %ip%:%httpport%>
DocumentRoot "%sprogdir%/domains/mysite/web"
ServerName "crmapp.org"
ServerAlias "crmapp.org"
<Directory "%sprogdir%/domains/mysite/web">
        DirectoryIndex index.php
        AllowOverride All
        Order allow,deny
        Allow from all
        <IfModule mod_authz_core.c>
        Require all granted
        </IfModule>
    </Directory>
</VirtualHost>

But after that, all other hosts start referencing this one. Apparently somewhere I write incorrectly, but I can not understand where. Tell me please.
Thanks in advance to all who respond.