Explanation
You can select the file types that are sent for emulation for all the Threat Prevention profiles. Each profile defines an Inspect or Bypass action for the file types. The Inspect action means that the file will be sent to the Threat Emulation engine for analysis, and the Bypass action means that the file will not be sent and will be allowed or blocked based on other Threat Prevention blades1. The other options are not valid actions for file types in Threat Prevention profiles. References: Check Point R81 Threat Prevention Administration Guide

One of the requirements for Joey's success in upgrading from R75.40 to R81 version of Security management using Advanced Upgrade with Database Migration method is that the size of the /var/log folder of the target machine must be at least 25% of the size of the /var/log directory on the source machine. Advanced Upgrade with Database Migration method is a procedure that allows administrators to upgrade their Security Management Server to a newer version by migrating their database from an older version to a new machine with a fresh installation of the newer version. One of the steps in this procedure is to copy the /var/log folder from the source machine to the target machine, which contains important log files and configuration files. To ensure that there is enough disk space on the target machine for this operation, it is required that the size of the /var/log folder on the target machine must be at least 25% of the size of the /var/log folder on the source machine.

Security Gateway Clusters in Load Sharing mode are not supported by the Central Deployment feature in R81.20 SmartConsole. According to the Check Point R81.20 Known Limitations article1, Central Deployment in SmartConsole does not support:
Connection from SmartConsole Client to the Management Server through a proxy server. In this case, use the applicable API command ClusterXL in Load Sharing mode VRRP Cluster Installation of a package on a VSX VSLS Cluster that contains more than 3 members.
On Multi-Domain Servers: Global Domain, or the MDS context
Standalone server
Standby Security Management Server or Multi-Domain Security Management
Scalable Platforms 40000 / 60000
SMB Appliances
The other options are supported by the Central Deployment feature in R81.20 SmartConsole. Dedicated Log Server, Dedicated SmartEvent Server, and Security Gateways/Clusters in ClusterXL HA new mode can be selected as targets for installing packages using the Central Deployment wizard.