Step 1
Find out which header layout you are using. I will take header layout three for example.

Step 2
Get an FTP software like Filezilla (free) and a coding software like Sublime Text (free)

Step 3
login to your server via FTP and navigate to wp-conten > themes > Inovado > framework > inc > headers > header-v3.php (as we use header version three as an example, if you're using another version please open up the other version's file)

Step 4
You will find

with the logo inside and

with the navigation inside in that file. (may vary from header version to header version)
Notice that four + twelve adds up to sixteen, so whatever you change needs to add up to sixteen.

Increasing or decreasing the "four" will increase or decrease the logo area.
Increasing or decreasing the "twelve" will increase or decrease the navigation area.

Step 5
Save that file and therefor overwrite the old file.

Possible column combinations

two + fourteen
four + twelve
six + ten
eight + eight
ten + six
twelve + four
fourteen + two

You can use sixteen for both to try to achieve a full width logo, even tho that might influence the layout of the nav bar.
If you don't see the changes right away, clear your browser cache or try another browser