The phrase "a capable group" is correct and usable in written English.
You can use it to describe a team or organization that has the skills and abilities to perform tasks effectively.
Example: "The project was a success due to the efforts of a capable group of professionals who worked tirelessly to meet the deadline."
Alternatives: "an effective team" or "a skilled group".
They're a very capable group without me.
The defence is a very capable group, despite lacking star names, and the first two draft picks of the summer were used to add a cornerback and a linebacker.
"This is a very capable group of candidates, but they aren't nearly as well known and none of them have the type of outsize personality that we've seen in past campaigns," said Dan Schnur, the director of the Jesse M. Unruh Institute of Politics at the University of Southern California, who oversaw the poll.
"And then you get to pick the best out of the other combinations to add to that, and you end up with a pretty capable group".
I encourage everyone to get to know our executive team as they are an enormously capable group of professionals from successful media and Internet powerhouses such as eBay, Yahoo!, MTV, and Symantec that will lead our company into its next phase.
This is a very, very capable group".
Our report shows a determined and capable group of plotters.
"Just a matter of quietly and efficiently eliminating any boat-rocking blighters trying to imitate Hitler & Mussolini... Just a small, secret, capable group who'd rub out the lads that want to fight.
The two of them are at the center of a tight and capable group at Brown campaign headquarters in Oakland, which includes the able day-to-day campaign manager Steve Glazer and stalwart Sterling Clifford, the press secretary so frequently out-numbered by the hordes of high-paid flacks employed by Whitman.
The details of this design basis threat are classified, but the new definition specifies a larger and more capable group of attackers.
