Configuring MS-SQL backup

Hello everyone!

I have 2 question on configuring MS-SQL Backup

1) I created 2 scripts in client: first for full backup of my databases, second for transaction logs backup for the sames databases. Can I Configure it in one policy? I need to execute full backup once at week, and transaction log once at hour. How do I need to configure policy and schedules? Do I need to create a new policy for transaction logs?

2) My backup executes correctly, when it's initiated by master server during the backup window. But I can't execute manual backup, it fails. How to configure it correctly?

Thanks!

P.S. Master, media, client are 7.5.0.6 running on Win 2008 R2, MS SQL 2008