Host configurations: To access these fields please edit "php.ini" file which is located in host (if you can't find it then contact with your host service provider)
upload_max_filesize = 32Mpost_max_size = 48M
memory_limit = 128M
max_execution_time = 600
max_input_vars = 10000
max_input_time = 400
WordPress Configurations:
https://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP
Reference: https://wordpress.org/about/requirements/